Home / 13,190.71-18,203.11-7,222.27

Finding the Fourth Proportional to 13,190.71, 18,203.11 and 7,222.27

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Solution

The fourth proportional to 13,190.71, 18,203.11 and 7,222.27 is: 9,966.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.71 : 18,203.11 = 7,222.27 : x
  2. Step 2: Convert to fraction form
    13,190.71/18,203.11 = 7,222.27/x
  3. Step 3: Cross multiply
    13,190.71x = 18,203.11 × 7,222.27
  4. Step 4: Simplify right side
    13,190.71x = 131,467,775.26
  5. Step 5: Solve for x
    x = 131,467,775.26/13,190.71
  6. Step 6: Final answer
    x = 9,966.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.